However, because oral medications must pass through the digestive system, to have the same efficacy as IV medications oral antibiotics must have high âbioavailabilityâ â the percentage of the drug that reaches the blood. Drugs administered via PICC lines have, by definition, 100 percent bioavailability.
A: Bactrim is a type of antibiotic used to treat a range of bacterial infections in the body according to WebMD. Physicians prescribe Bactrim to treat certain types of sexually transmitted diseases, urinary tract infections, respiratory illnesses, and various other infections.
Bactrim Â® (sulfamethoxazole/trimethoprim) is a prescription antibiotic approved to treat a variety of different infections. In addition to treating infections, it is also approved to prevent one particular infection, Pneumocystis carinii pneumonia, in people with a weakened immune system.actrim contains two different antibiotics, sulfamethoxazole and trimethoprim. Sulfamethoxazole belongs to a group of drugs known as sulfonamides (sulfa drugs). Trimethoprim does not belong to a specific class of medications. These two antibiotics work in different but similar ways.